SAN FRANCISCO (CBS SF) — You remember the McDonald’s jingle — “Two all-beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun.”

Well, forget the patties and just pass the sauce.

READ MORE: San Mateo Police Investigate Shooting in Hillsdale Mall Parking Lot

A McDonald’s giveaway of bottles of the trademark special sauce triggered an Ebay frenzy Thursday as lucky customers put them up for auction for as much as $15,000.

READ MORE: COVID: Experts Say Distinction In Hospitalization Numbers Important As California Case Rates Dip

The fast-food giant was giving way 10,000 free bottles as a lure to get customers to buy new versions of its Big Mac. The company is introducing the Mac Jr. and the Grand Mac, two different-sized variations of the classic sandwich.

McDonald’s introduced the original Big Mac in 1968.

MORE NEWS: UPDATE: Possible Explosive Device Outside Oakland Federal Building Turns Out To Be Elaborate Hoax

TM and © Copyright 2017 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2017 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten. The Associated Press contributed to this report.